LF Haunter or Gengar(don't care , because its evolve anyway) with Special Attack Boosting Nature or Neutral . Of course ,i need Modest for better choice , but any would be fine .
I can offer all 3 monkey(BW) , Archen or couple of Zorua(male+female if you need) . All pokemon legit , not clone .
Also have all 3 starter(BW).